Selected skin doesn't properly save

In normal 5v5, the correct skin seems to always save, but in other types such as featured and ARAM, it will always revert to a different skin. I think it's either the first skin I bought or the first skin that I own that was released for a champ. Mildly annoying that I have to always remember to switch to the skin I normally play. Not a huge deal, but it has bugged me enough over the last year(at least) that I am reporting it here.